feat: SEO field elements and bundle

scripts/check-dist.sh

@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+# Drift gate for the committed SEO element bundle. Rebuilds the elements
+# from the committed lockfile into a temporary directory and fails when the
+# result differs from assets/dist, the files field_types.go embeds. After
+# changing assets/src, rebuild with `npm run build` and commit assets/dist.
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+cd "$ROOT"
+
+if [[ ! -d node_modules ]]; then
+  npm ci --ignore-scripts
+fi
+
+npm run typecheck
+
+TMP="$(mktemp -d)"
+trap 'rm -rf "$TMP"' EXIT
+
+node_modules/.bin/vite build --outDir "$TMP/dist" --emptyOutDir --logLevel warn
+
+if ! diff -r "$TMP/dist" assets/dist; then
+  echo "check-dist: assets/dist is stale; run npm run build and commit assets/dist" >&2
+  exit 1
+fi
+echo "check-dist: assets/dist matches a fresh build"